ruby on rails - NoMethodError in UsersController#show -

i'm getting following error in app when visit user profile page not signed app (i'm using devise):

nomethoderror in userscontroller#show undefined method `connections' nil:nilclass

app/controllers/users_controller.rb:19:in `show'

when i'm logged in error goes away. know why it's failing. need coming proper solution.

the error occurs on line in users controller:

def show @connection = current_user.connections.build(user_id: current_user, otheruser_id: @user) end 

a connection form appears users logged app (simply put, button appears asks if connect person friend). however, i'm checking if user logged in on user view "show" page <% if user_signed_in? %> before form.

here's relevant code view:

 <%= render 'connect_form' if user_signed_in? %> 

connect_form

<% unless current_user == @user %>   <% if @contact.present? && user_signed_in? %>       <%= @user.first_name %>  <%= @contact.description %> (<%= link_to "edit contact", edit_connection_path(:id => @contact.id, :user => @user) %>)<br \>   <% else %>     <% if user_signed_in? %>how know <%= @user.first_name %>? (<%= link_to "edit contact", new_connection_path(:user => @user) %> )   <% else %>  <% end %><br \> <% end %> <% end %> 

connection_form (creating new one)

<% if user_signed_in? %> how know <%= @user.first_name %>?   <%= form_for(@connection) |f| %>   <%= f.collection_select :description, connection::connectiontype, :to_s, :to_s, :include_blank => true %>   <%= f.hidden_field(:otheruser_id, :value => @user.id) %>   <%= f.submit "save", class: "btn btn-primary btn-small" %>   <% else %> <% end %> 

why app trying load nil array `@connections when have check user_signed_in? appreciated!!

first thing put check build connection if current user exist.

def show   @connection = current_user.connections.build(user_id: current_user, otheruser_id: @user) if current_user end 

the main thing notice the: if current_user @ end of line